fund.list

List the institutional managers (hedge funds, asset managers) that file SEC 13F reports, ranked by AUM. Returns each fund's name, AUM, latest reported quarter, holdings count, and its SEC CIK — the id you pass to fund.holdings, fund.holdings.diff, fund.holdings.as_of, and fund.position.history. Start here to find which funds to track. Public-domain SEC EDGAR data.

curl -X POST https://arkolith.com/api/mcp \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "fund.list",
    "arguments": {
      "limit": 10
    }
  }
}'

{
  "funds": [
    {
      "cik": "1067983",
      "name": "BERKSHIRE HATHAWAY INC",
      "aum_usd": 258000000000,
      "latest_quarter": "2026-03-31",
      "holdings_count": 42
    }
  ],
  "provenance": { "source": "SEC EDGAR 13F", "license": "public domain" }
}